Rename ms1 files to mt files (part 1 -- renames only)

libgloss/mt/exit.c

@@ -0,0 +1,10 @@
+#include <_ansi.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "trap.h"
+
+
+void _exit (n)
+{
+  TRAP0 (SYS_exit, n, 0, 0);
+}